St. Mary's Credit Union ← View details 133 West Main Street, Marlborough, MA 01752 +1 508-490-8000 bankatsmcu.com Suggest an Edit Name* State* Locality* ZIP* Street address* Phone* Website Opening hours Monday: 08:00 am — 04:00 pm Tuesday: 08:00 am — 04:00 pm Wednesday: 08:00 am — 04:00 pm Thursday: 08:00 am — 07:00 pm Friday: 08:00 am — 06:00 pm Saturday: 08:00 am — 12:30 pm Your comments * — Required information